NAT-PT is not available on IOS 12.4

I have a Cisco IOS image named "c3660-ik9o3s-mz.124-18" installed. I've tried to configure IPv6 NAT-PT feature but the commands are not available. I disabled CEF as per one of the Cisco's articles but it doesn't help. I assume that NAT-PT is not supported since it is not mentioned in the CCIE's blueprint.

NAT-PT is supported in 12.4 Mainline, however is not complied into the featureset you are using. You will need to upgrade to the Enterprise Plus featureset to access this feature.

Now that aside, some clarification on the status of NAT-PT. It is still supported in IOS, and as of yet has not reached end of life status. HOWEVER, the protocol has sever limitations and has been deprecated by the IETF. The industry as a whole is moving toward NAT64, which is roadmapped for the IOS platforms at some point in the future. As pointed out this feature is currently suppored on our IOS-XR and IOS-XE platforms (read CRS-1 and ASR1k).

Feel free to play / experiment etc, however we would recommend against using in porduction. Please use with caution.

This is all good and well that NAT-PT is dead, but when you invest in Cisco Nexus 7K platform and are stuck with buggy code that ipv6 neighbor process is broken and connectivity suffers, the only work around we have found for IPv6 connectivity is using IPv6 NAT-PT. Works great on a 2811.....